Explanation:
In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion.
It takes four hydrogen atoms to fuse into helium atom. During the process some of the mass is converted into energy.
A nuclear reaction combining nuclei of lighter atoms together to form heavier nuclei resulting in the release of tremendous amount of energy is called a nuclear fusion reaction.
Nuclear fusion reaction takes place in the sun.
Answer:
In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.
11. A proton is uniformly accelerated from rest to 80.0% of the speed of light in
18 hours, 6 minutes, 45 seconds. What is the acceleration of the proton?
The acceleration of the proton is 3681 m/s^2
What is the acceleration?The term acceleration has to do with the change in the speed of the body with time. We can see here that the proton started from rest and was accelerated to 80.0% of the speed of light in 18 hours, 6 minutes, 45 seconds.
Initial velocity of the proton = 0 m/s (from rest)
Final velocity of the proton = (0.8 * 3 * 10^8 m/s) = 2.4 * 10^8 m/s
Time taken = 18 hours, 6 minutes, 45 seconds or 65205 s
Acceleration = 2.4 * 10^8 m/s - 0 m/s/65205 s
= 3681 m/s^2
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If it takes e = 91.9 mj of energy to separate q = 2.91 c of charge, what is the resultant voltage?
The resultant voltage is calculated as 0.315 V
CalculationIt is given that
E = 91.9 mj
Q = 2.91c
V = E/Q
=91.9 x [tex]10^{-3}[/tex] / 2.91
= 31.58 mV
= 0.03158 V
Thus, the resultant voltage is calculated as 0.315 V
What is Voltage?The difference in electric potential between two points, which is defined as the work required per unit of charge to move a test charge between the two points, is known as voltage, electric potential difference, electric pressure, or electric tension.
Voltage can also be described as the pressure from an electrical circuit's power source that helps to push the charged electrons (current) through a conducting loop, that enables them to do work such as illuminating a light.
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What is the difference between a scalar and a vector? a scalar has whereas a vector has categorize the quantities based on whether they are scalars or vectors.
The difference between a scalar quantity and a vector quantity can be found below.
What is a scalar and vector quantity?A scalar quantity is a quantity that has magnitude but not direction.
On the other hand, a vector quantity is a quantity with both magnitude and direction.
Examples of scalar quantities are;
SpeedTemperature LengthTime MassExamples of vector quantities are;
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20 drops of an essential oil have a mass of 407.7 mg (milligram) and a density of 0.875g/cm3. what is the volume occupied by the drops?
Volume occupied by the drops is 0.46 cm^3
Given:
no. of drops of oil = 20 drops
mass of 20 drops = 407.7 mg
Density of 20 drops = 0.875g/cm3
To Find:
Volume occupied by the drops
Solution:
Density is define as mass per unit volume
by using the formula we can find volume
Density = mass/volume
0.875 = 0.4077 gram/ volume
Volume = 0.4077 gram/0.875 = 0.46 cm^3
Hence, volume occupied by 20 oil drops is
0.46 cm^3
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what is the magnitude of your total displacement if you have traveled due west with a speed of 23 m/s for 165 s , then due south at 12 m/s for 285 s ?
Answer:
5108.7 m
Explanation:
23 m/s * 165 s = 3795 m
12 m/s * 285 = 3420 m
mag of resultant ( use pythag theorem)
sqrt ( 3795^2 + 3420^2) = 5108.7 m
A bare helium nucleus has two positive charges and a mass of 6.64 10-27 kg. Calculate its kinetic energy in joules at 5.00% of the speed of light.
The kinetic energy of the helium nucleus will be 4.98 x 10⁻¹³ J
Kinetic energy can be define as , that it is a form of energy that an object or a particle is cause of its motion. Its unit is joule i.e. j & it is given as,
K.E. = 1/2 mv²
where , m is mass of the particle and v is the velocity of the particle .
Energy can be expressed as, the ability to perform work. Energy can neither be created nor destroyed, but it can only be transformed from one form to another. The unit of energy is joule .
Mass of helium nucleus = m = 6.64 x 10⁻²⁷ kg
Speed of light = c = 3 x 10⁸ m/s
Speed of light at 5.00% = c = 5.00/100x 3 x 10⁸ m/s = 1.5 x 10⁷ m/s
The kinetic energy of the helium nucleus can be given as ,
K.E = ¹/₂mc²
K.E = ¹/₂ x (6.64 x 10⁻²⁷) x (1. 5 x 10⁷)²
K.E = 4.98 x 10⁻¹³ J
Therefore, the kinetic energy of the helium nucleus is 4.98 x 10⁻¹³ J
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Distance versus time is plotted and a best-fit line is found to be y = 0.098 x 0.01y=0.098x 0.01. what are the units of the slope 0.098?
The unit of the slope is m/s
Given that y = 0.098x + 0.01
According to slope formula, y = mx + c
Slope, m = 0.098
Slope of the line is equal to the velocity of the object in a distance-time graph. Unit of velocity is m/s.
Therefore, the unit of the slope is m/s
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Two joggers run at a constant velocity of 7.5 m/s to the east. At t=0s one jogger is 15 m east of the origin, the other is 15 m west of the origin. How would their position-time graphs look different?
The position-time graphs of the two joggers will look like a rectangle at the given time period.
What is position time graph?A position time graph is a type of graph in which the position x of a particle is plotted on the y-axis and the time t on the x-axis.
The position time graph of the two jogger can be sketched as follows;
| | |
| | |
| | |
|-----------------------------------------|----------------------------------------|
15 m(west) 15 m(east)
The position of both joggers will be same after the given time but their direction will be different.
Thus, the position-time graphs of the two joggers will look like a rectangle at the given time period.
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The force that accelerates a rocket in outer space is exerted on the rocket by the?
Gases at pressure are released by rockets as they travel towards space. According to Newton's third law, the combustion chamber's exhaust gases push the rocket with an accelerating force known as the thrust.
Explain exactly Newton's Third Law:According to Newton's third law, if an object A pulls on an object B, then object B must exert an equal-sized and opposite-direction force on the first thing directed in the opposite direction. This law illustrates a symmetry in nature whereby forces always occur in pairs and whereby no body can exert a force without also being subjected to one.
What are Newton's 3rd law examples?Action and response are always equal but always move in the opposite direction, according to Newton's third law of motion. A human walking on the ground, a hammer driving a nail, a magnet attracting a paper clip, and a horse pulling a cart are all examples of Newton's third rule of motion.
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A velocity vector has a magnitude of 25.0 m/sm/s . if its yy component is -10.0 m/sm/s , what are the possible values of its xx component?
The possible values of its xx component are 13, 9.
What is component?A part is a practically free piece of any framework. It carries out some role and may require some information or produce some result. A part in programming is frequently addressed by classes. Each piece of a two-layered vector is known as a part. The parts of a vector portray the impact of that vector in a provided guidance. The consolidated impact of the two parts is comparable to the impact of the single two-layered vector. The part strategy is a method for adding various vectors to each other in physical science. It empowers the option of right-calculated vector parts to find a resultant vector having an extent and heading that relies upon the singular parts added.
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4. Apply Scientific Reasoning Four boys push
on the front, back, and sides of a shopping
cart. The boys in the front and on the two
sides push with a force of 60 N. The boy in
back pushes with a force of 50 N. Which way
does the cart move?
The body would be moved in the forward direction by a net force of 10N.
What direction does the cart move?We know that force is a vector quantity. This implies that it has both magnitude and direction. The net force that acts on a body is the resultant force and this is the force that would move the object in a given direction. The object moves in the direction of the net force.
We are told that the forward force = 60 N
The backwards force = 50 N
We now have to determine the net force in order to understand the direction in which the body would move.
Net force = 60 N - 50 N = 10 N
It then follows that the body would be moved in the forward direction by a net force of 10N.
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A jetliner goes from rest to a takeoff speed of 183 mi/h in 36.1 s. what is the magnitude of its average acceleration?
A jetliner goes from rest to a takeoff speed of 183 mi/h in 36.1 s.
the magnitude of its average acceleration is 81.80
CalculationTake off speed of the jetliner = 183 mi/h
so time taken = 36.1s
average acceleration = change in velocity / time taken
= (183 x 1609.3)/ 3600
= 81.80 m/[tex]s^{2}[/tex]
What is average acceleration?The rate at which an object’s velocity changes is measured as its acceleration. Since it is a vector, speed and direction are also included. In the SI, acceleration is measured in meters per second squared (m s 2).
An object’s velocity is how quickly it is travelling in a specific direction. A vector, that is. In the SI, velocity is measured in meters per second (m s).
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Which layer of the osi model ensures the data being sent from the sender is formatted correctly so it can be interpreted correctly by the recipient system?
The presentation layer is sometimes known as the syntax layer since it is in charge of ensuring that the data it either receives or transmits to other layers has the correct syntax. Data sent across the network is formatted and encrypted by the presentation layer.
What is meant by the presentation layer?The presentation layer, which is layer 6 in the seven-layer OSI model of computer networking, acts as a network's data translator. It is referred to as the syntactic layer at times.
The communication is given to the top layer in a defined format thanks to the presentation layer (Layer 6). It deals with the messages' syntax and meaning. Communication across disparate systems, encrypts messages from the user-dependent format to the common format and vice versa.
The presentation layer, which is located at Layer 6 of the Open Systems Interconnection (OSI) communications architecture, makes sure that all communications passing through it are in the right format for the destination application. In other words, from the application layer's point of view, it provides the data in a comprehensible format.
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An ion of aluminum has a charge of 3 . the ion contains 10 electrons. how many protons does a neutral atom of aluminum possess?
a. 3
b. 10
c. 13
d. 16
The correct toption is (C) 13
The neutral atom of aluminum possess 13 protons.
Aluminum, denoted by the letter Al, is a group 3 element on the periodic chart. Total weight is 27 kilos. Since the number of electrons and protons in a neutral atom are equal, an aluminum atom that is neutral or uncharged has 13 electrons, 13 protons, and 14 neutrons. Keep in mind that the product of protons and electrons determines mass.The solution to this is that a 3+ charge on an aluminum ion means that an aluminum atom has lost three electrons, or 13 electrons - 3 electrons = 10. An aluminum atom will consequently have 10 electrons because it has a +3 charge. The fact that an aluminum atom possesses 13 protons when it is in a neutral state is unaffected by this.Learn more about the quantum mechanics with the help of the given link:
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Sabrina is studying exercise physiology. What is MOST likely to be the
main focus of her studies?
O how bodies react when muscles are put to use
O how skeletal bones affect exercise form and posture
O how the lungs and heart respond to aerobic workouts
how anaerobic workouts boost metabolism
According to the research, the correct option is how the lungs and heart respond to aerobic workouts. It is most likely to be the main focus of her studies of exercise physiology.
What is exercise physiology?It is the medical specialty that includes the study and understanding of physical activity as a physiological stimulus and its repercussions on each of the organs of the human body, their behavior and responses.
In this sense, during physical activity or exercise, cardiovascular physiological adaptations occur that improve physical performance since all the body's systems are automatically activated and in tune.
Therefore, we can conclude that according to the research, the correct option is how the lungs and heart respond to aerobic workouts. It is most likely to be the main focus of her studies of exercise physiology.
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A boy sledding down a hill accelerates at 1.25 m/s2. if he started from rest, in what distance would he reach a speed of 5.30 m/s?
By uniform motion, the distance traveled is 11.24 meters.
We need to know about the uniform motion to solve this problem. The uniform motion is the motion of an object which has acceleration applied. It can be determined as
vt = vo + a . t
vt² = vo² + 2a . s
s = vo . t + 1/2 . a . t²
where vt is final velocity, vo is initial velocity, a is acceleration, t is time interval and s is displacement.
From the question above, we know that:
a = 1.25 m/s²
vo = 0 m/s
vt = 5.3 m/s
By using the second equation, we can calculate the distance
vt² = vo² + 2a . s
5.3² = 0² + 2 . 1.25 . s
2.5s = 28.09
s = 11.24 m
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A kangaroo can jump over an object 2.40 m high. calculate how long in seconds it is in the air. (3 sig figs
A kangaroo will stay 0.699s in the air when he jumps.
What motion does the projectile make?A projectile is an object that is launched vertically into the air and moves while being pulled by gravity. A projectile is an object that is launched into the air horizontally and moves regardless of gravity.
How do you determine the rate of descent?G = -9.81 m/s2 is the acceleration of gravity close to the earth. Simply multiply the acceleration of gravity by the period since the object was released to determine the object's speed (or velocity). In other words, velocity is equal to -9.81 m/s2 * time, or V = gt.
According to the given information:From the conversion of energy =[tex]h=\frac{g t^2}{2}[/tex]
t = √(2h/g)
= √((2 x 2.40) / 9.8)
=0.699 s
A kangaroo will stay 0.699s in the air when he jumps.
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Do you recommend the use of nuclear power as a main source of energy? explain your answer (PLEASE HELP WILL MARK BRAINLIEST!!)
Yes because;
i.Nuclear energy protects air quality
✓Nuclear is a zero-emission clean energy source.
It generates power through fission, which is the process of splitting uranium atoms to produce energy. The heat released by fission is used to create steam that spins a turbine to generate electricity without the harmful byproducts emitted by fossil fuels.
ii.Nuclear energy produces minimal waste
iii.Nuclear energy’s land footprint is small
✓Despite producing massive amounts of carbon-free power, nuclear energy produces more electricity on less land than any other clean-air source.
What is Issac Newton’s
Laws,
According to the first rule of motion, an object's motion will not alter unless there is a force acting on it.
According to the second law of motion, the amount of force exerted on an object is proportional to the product of the object's mass and its acceleration.
According to the third law, when two things interact with one other, the forces that they apply to each other are of equal magnitude but in opposing directions.
This is further explained below.
Who is Issac Newton?Generally, Isaac Newton, as he was formally known, was an English physicist and mathematician who was the leading light of the 17th century's Scientific Revolution.
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Answer:
look it up
Explanation:
The substance that maintains body temperature, and acts as a lubricant and protective cushion is:_______
Water serves as a lubricant and a shock absorber as part of body fluids.
Which of the following nutrients controls body temperature and lubricates joints?Water transports vital nutrients within the body, eliminates waste, and regulates body temperature. It keeps our youthful, able bodies active and healthy by acting as a lubricant around joints and a shock absorber for the body's organs.Which nutrient helps the body regulate and maintain body temperature?60% of our body mass is made up of water, a nutrient. It is a component of every cell and tissue in the body and serves a variety of critical activities. Water distributes other nutrition to all parts of the body, it takes waste out of the blood and it helps to maintain body temperature.learn more about here
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Gym lockers are to be numbered from 1 through 99 using metal numbers to be nailed onto each locker. how many 7s are needed?
There are nineteen gym lockers that would have the digit "seven" on them.
How many sevens are there?In this problem, we need to know the number of gym lockers that would have the number 7 attached to them either as tens or digit as the lockers are numbered from one to ninety nine.
Let us now proceed which lockers would have the digit "seven" on them;
7, 17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97. We can see that there are nineteen gym lockers that would have the digit "seven" on them.
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A cyclist rides at an average speed of 23 miles per hour. if she wants to bike 190 km , how long (in hours) must she ride?
An average cyclist travels at a speed of 23 mph. Time (t) = 5.1 hours if she wants to ride 190 kilometers.
What is speed?The distance traveled in a unit of time is called speed. It refers to a thing's rate of movement. The scalar quantity known as speed is the velocity vector's magnitude. It has no clear direction. A faster rate of movement is indicated by a higher speed. It travels slower if the speed is lower. It has zero speed if it isn't moving at all.
The formula: can be used to determine the constant velocity of an object traveling straight forward.
r = d / t
where
r stands for rate or speed (sometimes denoted as v, for velocity)
d is the traveled distance.
t the amount of time needed to finish the movement
The average speed of an object over a period of time is given by this equation. We can see the object's average speed here, however at some moments over the time frame, it may have been moving faster or slower.
As the time interval gets closer to zero, the maximum average speed is reached. The speed at that moment is what you see when you look at a speedometer in an automobile. While you may have briefly reached a speed of 60 mph, your average speed over the course of 10 minutes could have been much higher or much lower.
190 Km (given)
1 km = 0.621 miles (should know)
So, 190 km = (190x0-621) miles
= 118 miles
23 miles per hour means,
23 miles- 1 hour
so, 118 miles - (118 × 1/ 23) hour
118 miles = 5.1 hour.
Time (t) = 5.1 hour
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As volume is held constant and the temperature increases, how would the pressure be expected to change?
Gay Lussac's Law states that when a gas is held at a fixed volume, its pressure is exactly proportional to its Kelvin temperature. The molecules of a gas receive more energy when heated, causing them to move more quickly. This results in increased pressure and more impacts on the container's walls.
What do you understand by pressure?Pressure is the term used to describe the physical force exerted on an object. A perpendicular force is applied to the surfaces of the objects per unit area. F/A is the fundamental formula for pressure (Force per unit area)
This is based on the supposition that the force is applied perpendicular to the surface area. The pressure would rise proportionately if you exerted the same amount of force over a larger surface area. 5 Pa would be the force of 5 N applied over the same area of 1 square meter.
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A car covers a distance of 200m. If its velocity is 20 m/s², calculate the time taken.
An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 15 m if her initial speed is 3 m/s. what is the free-fall acceleration on the planet?
Answer:
R = V^2 sin 2 θ / g range formula
R is a maximum for θ = 45 and R = V^2 g
g = V^2 / R = 3^2 / 15 = .6 m/s^2
For what type of object is the period-luminosity relation used for determining distances?
a. rr lyrae variables
b. t tauri variables
c. cepheids cataclysmic variables
d. planetary nebulae
Cepheids cataclysmic variables object is the period-luminosity relation used for determining distances.
What is Cepheids cataclysmic variables?Cepheid Variables are very bright stars that are 500–300,000 times as bright as the sun. They undergo brief variations every 1–100 days. They are pulsing variables that follow a predetermined pattern and experience rapid expansion and contraction. Other pulsating variables include RR Lyrae stars, which are short period, older stars that are not as massive as Cepheids; and RV Tauri stars, which are super giants with higher light fluctuations. Astronomers may study the variability of a Cepheid's brightness to determine its distance.
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The number of calories that you can eat a day without gaining weight depends on your _____.
The number of calories that you can eat a day without gaining weight depends on your activity level
For there to be a balance between the number of calories consumed through food and weight gain, it is important to maintain a good level of physical activity that helps us to maintain a healthy weight and at the same time does not allow an increase in weight and body mass.
All this is because the relationship between daily calories consumed and weight gain is directly proportional to the level of physical activity that we do.
What is body mass?It is the amount of mass associated with a person's body
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The platofm on the school stage is 8 3/4 feet wide. each chair is 1 5/12 feet wide. how many chairs will fit acroos the platform?
6 chairs will fit across the platform.
CalculationWe have a school stage of 8 3/4 feet wide.
It's also given that each chair is 1 5/12 feet wide.
To find out the number of chairs possible we can simply divide the total length available by width of the chair.
8 3/4 = 35/4
1 5/12 =17/12
So, 35/4 / 17/12
So, the final answer comes up to 6.
so, the total number of chairs that would fit in are 6.
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What is the mass in kilogram of 680ml of a substance that has a density of 0.930?
Mass of substance is 0.6324 kg
Given:
volume = V = 680ml = 0.68 L
density = D = 0.930
To Find:
mass in kg
Solution: mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force.
Density = mass/volume
mass = Density x Volume = 0.93 x 680
Mass = 0.6324 kg
Hence, the mass of substance is 0.6324 kg
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Atp, or ____________ , provides energy for nerve impulse conduction, muscle contraction, and many other chemical reactions necessary for life.
Atp, or Adenosine triphosphate, provides energy for nerve impulse conduction, muscle contraction, and many other chemical reactions necessary for life.
Adenosine triphosphate is an essential molecule in cellular energy production such as protein phosphorylation and RNA production. It is produced during photophosphorylation and cellular respiration, and is consumed by many enzymes in the catalysis of numerous chemical processes.
It is composed in the center of the molecule by: a five-carbon sugar (ribose), which binds to the nitrogenous base adenine and a chain of three phosphates. Its molecular formula is C₁₀H₁₆N₅O₁₃P₃
What is anatomy?It is the science or branch of biology that studies the structure of living beings in their evolutionary stages. Anatomy is subdivided into: plant and animal.
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